<template>
  <a-layout>
    <a-layout-content
        :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }"
    >
      <a-space size="small">
      <a-input-search
            v-model:value="KeyValue"
            placeholder="输入名称"
            enter-button="查询"
            size="large"
            @search="handleQuery({page: 1,size: pagination.pageSize, name:KeyValue})"
            style="width: 400px"
        />
        <a-button type="primary" @click="add()" size="large">
          新增
        </a-button>
      </a-space>
      <a-table :columns="columns"
               :row-key="record => record.id"
               :data-source="ebooks"
               :pagination="pagination"
               :loading="modalLoading"
               @change="handleTableChange"
      >
        <template #cover="{ text: cover }">
          <img v-if="cover"
               :src="cover"
               alt="avatar"
               :width="100"
               :height="100"/>

        </template>
        <template v-slot:category="{ text, record }">
          <span>{{ getCategoryName(record.category1Id)}} / {{getCategoryName(record.category2Id) }}</span>
        </template>
        <template v-slot:action="{ text, record }">
          <a-space size="small">
            <router-link :to="'/admin/doc?ebookId=' + record.id">
              <a-button type="primary">
                文档管理
              </a-button>
            </router-link>
            <a-button type="primary" @click="edit(record)">
              编辑
            </a-button>
            <a-popconfirm
                title="删除后不可恢复，确认删除?"
                ok-text="是"
                cancel-text="否"
                @confirm="handleDelete(record.id)"
            >
              <a-button type="primary" danger>
                删除
              </a-button>
            </a-popconfirm>
          </a-space>
        </template>
      </a-table>
    </a-layout-content>
  </a-layout>

  <a-modal title="电子书表单"
           v-model:visible="modalVisible"
           @ok="handleModalOk"
           :confirm-loading="modalLoading">
    <a-form :model="ebook" :label-col="{ span: 6}">
      <a-form-item label="封面">
        <a-input v-model:value="ebook.cover" />
      </a-form-item>
      <a-form-item label="名称">
        <a-input v-model:value="ebook.name" />
      </a-form-item>
      <a-form-item label="分类">
        <a-cascader v-model:value="categoryIds"
                    :options="level1"
                    :field-names="{ label: 'name', value: 'id', children: 'children'}" />
      </a-form-item>
      <a-form-item label="描述">
        <a-textarea
            v-model:value="ebook.description"
            placeholder="请输入描述内容"
            :auto-size="{ minRows: 2, maxRows: 5 }"
        />
      </a-form-item>
    </a-form>
  </a-modal>

</template>

<script lang="ts">
import {defineComponent, onMounted, ref,reactive} from 'vue';
import axios from 'axios'
import {message} from "ant-design-vue";
import {Tool} from "@/util/tool";

export default defineComponent({
  name: 'AdminEbook',
  setup() {
    console.log("setup");
    const ebooks = ref();
    const pagination = ref({
      current: 1,
      pageSize: 10,
      total: 0
    });
    const loading = ref(false);
    const KeyValue = ref<string>('');
    const columns = [
      {
        title: '封面',
        dataIndex: 'cover',
        slots: {customRender: 'cover'}
      },
      {
        title: '名称',
        dataIndex: 'name',
      },
      {
        title: '分类',
        slots: {customRender: 'category'}
      },
      {
        title: '文档数',
        dataIndex: 'docCount',
      },
      {
        title: '阅读数',
        dataIndex: 'viewCount',
      },
      {
        title: '点赞数',
        dataIndex: 'voteCount',
      },
      {
        title: 'action',
        key: 'action',
        slots: {customRender: 'action'}
      }
    ];

    /**
     * 数据查询
     **/
    const handleQuery = (params: any) => {
      loading.value = true;
      //axios.get("/ebook/list", params)会造成params分离成单个的param，导致后端无法正确获得参数
      axios.get("/ebook/list", {
          params: {
            page: params.page,
            size: params.size,
            name: params.name,
          }
          }).then((response) => {
        loading.value = false;
        const data = response.data;
        if (data.success) {
          ebooks.value = data.content.list;

          //重置分页按钮
          pagination.value.current = params.page;
          pagination.value.total = data.content.total;
        }else {
          message.error(data.message);
        }
      })
    };

    /**
     * 表格点击页码时触发
     **/
    const handleTableChange = (pagination: any) => {
      console.log("" + pagination);
      handleQuery({
        page: pagination.current,
        size: pagination.pageSize
      });
    };

    //---------------表单-----------------
    /**
     *  数组 [100， 101]对应： 前端开发/Vue
     */
    const ebook = ref();
    const categoryIds = ref();
    const modalVisible = ref(false);
    const modalLoading = ref(false);
    const handleModalOk = (params: any) => {
      modalLoading.value = true;
      ebook.value.category1Id = categoryIds.value[0];
      ebook.value.category2Id = categoryIds.value[1];
      axios.post("/ebook/save",ebook.value).then((response) => {
        modalLoading.value = false;
        const data = response.data; // data == commonResp
        if (data.success) {
          modalVisible.value = false;
          modalLoading.value = false;

          //重新加载列表
          handleQuery({
            page: pagination.value.current,
            size: pagination.value.pageSize
          });
        }else {
          message.error(data.message);
        }
      });
    };

    /**
    *编辑
    **/
    const edit = (record: any) =>{
      modalVisible.value = true;
      //不复制会指向同一内存地址,导致数值绑定
      ebook.value = Tool.copy(record);
      categoryIds.value = [ebook.value.category1Id, ebook.value.category2Id]
    };
    /**
     *新增
     **/
    const add = () =>{
      modalVisible.value = true;
      ebook.value = {};
    };
    /**
     *删除
     **/
    const handleDelete = (id: number) =>{
      axios.delete("/ebook/delete/" + id).then((response) => {

        const data = response.data; // data == commonResp
        if (data.success) {
          //重新加载列表
          handleQuery({
            page: pagination.value.current,
            size: pagination.value.pageSize
          });
        }
      });
    };
    const level1 = ref();  //一级分类树，children属性就是二级分类
    let categorys: any;
    /**
     * 查询所有分类
     **/
    const handleQueryCategory = () => {
      loading.value = true;
      axios.get("/category/all").then((response) => {
        loading.value = false;
        const data = response.data;
        if (data.success) {
          categorys = data.content;
          console.log("原始数组：", categorys);

          level1.value = [];
          level1.value = Tool.array2Tree(categorys, 0);
          console.log("树形结构：", level1);

          // 加载完成分类后，再加载电子书，否则如果分类树加载很慢，则电子书渲染会报错（分类只加载一次，编辑电子书无需再进行加载）
          handleQuery({
            page: 1,
            size: pagination.value.pageSize
          });
        } else {
          message.error(data.message);
        }
      })
    };

    const getCategoryName = (cid: number) => {
      let result ="";
      categorys.forEach((item: any) => {
        if (item.id === cid){
          result = item.name;
        }
      });
      return result;
    }

    onMounted(() => {
      handleQueryCategory();
    });

    return {
      columns,
      ebooks,
      loading,
      pagination,
      handleTableChange,
      getCategoryName,

      modalVisible,
      modalLoading,
      handleModalOk,
      handleQuery,
      ebook,
      KeyValue,
      level1,
      categoryIds,

      add,
      edit,
      handleDelete,
      handleQueryCategory,
    }
  }
});
</script>